@sdetweil thanks for your prompt reply. I am running rpi4 OS and then installed MM on it.
The default out of the box modules (US Holidays calendar, and the
compliment msgs shows up), but when i add my own google calendar URL that also does not show up.
Not even a single module i add shows up.
I am following the instructions as on the modules readme pages. I realize some modules require npm install command even after that i get the same blank screen error.

I am new to MM, and i do have some programming knowledge. I understand the concept of braces closing them properly, spacing and closing the loop.
I have been watching youtube and or going through the read me for each of the modules, i follow the instructions to the dot, i will pick up the api keys, or any kind of custom input needed, but every single module turns my mm to blank screen.
I have tried VI i have tried nano, i have tried UI mod Scit and text editor, but each time i copy paste any snippet of code from git, I have to end up aligning the code, it never copies to the config file as desired. Hence i wonder if the code snippet copy paste and spacing and tabs is the problem. How do you work with these.